Of the previously available titles in the bundle, Serious Sam: The Random Encounter -- available on PC as a DRM-free download, on Steam, and on Desura -- is a refreshing take on the RPG genre, developed by acclaimed indie developer Vlambeer (Super Crate Box, Ridiculous Fishing). Its gameplay is a clever pixelated hybrid of turn-based battles with real-time, run and gun offense and defense maneuvering.

Also part of the pack, Serious Sam Double D is available on PC as a DRM-free download, on Steam, and on Desura, is a hand drawn, side-scrolling shooter featuring over-the-top gameplay and chaotic action from arcade-loving indie Mommy's Best Games (Weapon Of Choice, Explosionade).

Next, making an exclusive debut on PC in this Lightning Pack is a DRM-free download and Desura PC version of Serious Sam: Kamikaze Attack. Developer Be-Rad Entertainment's offering (originally available exclusively on smartphones) is a Canabalt-style action-platformer where players control the Headless Kamikaze enemy, striving to accomplish the bad guy's dream of blowing up the vile Serious Sam on every level.

And as a special bonus, Croteam, the indie team who originated the Serious Sam franchise, offers the original Serious Sam: The First Encounter and Serious Sam: The Second Encounter games for PC, redeemable on Steam. These two original titles are packed with the arcade-action style first-person shooting that the Serious Sam series is known for, including gonzo single- and multi-player modes.

Finally, we've decided to unleash our special bonus up front, as a world exclusive Indie Royale debut. Serious Sam: The Greek Encounter is an 8-bit, top-down "demake" of Serious Sam, specially commissioned by Team Fortress Arcade and Halo/DJ Hero demake author Eric Ruth. It's available for PC as a DRM-free download and on Desura, and sees Serious Sam in ancient Greece battling the relentless hordes of Mental's army in an all-new retro 8-bit adventure.

This new Lightning Pack will run for just 100 hours, under the same pricing model as before: the price will automatically increase as more people buy the pack. Those generous buyers who pay more than the current minimum can decrease the price for other purchasers.